GeForce GTX 580 3GB vs Radeon HD 5750 1GB

Intro

Compare those specs to the Radeon HD 5750 1GB, which features core clock speeds of 700 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 RAM. It features 720(144x5) SPUs along with 36 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 158 Watts (184%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 3GB should in theory be a lot better than the Radeon HD 5750 1GB overall. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 118784 (161%)

Texel Rate

The GeForce GTX 580 3GB should be much (approximately 96%) better at AF than the Radeon HD 5750 1GB. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 24208 (96%)

Pixel Rate

The GeForce GTX 580 3GB is quite a bit (about 231%) faster with regards to FSAA than the Radeon HD 5750 1GB, and should be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 25856 (231%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.